Deleting 32 bit Window 7

It would be best to see the screenshot of Disk Management - Post a Screen Capture Image
since we can't tell by what you wrote which is on which HD, only guess.

But with those listings if System Reserved is on the HD with C then it is intended to boot C but is not doing so as signified by it lacking a System Flag. We see the System flag on D which means it is booting both.

So since System Reserved is already marked Active, you only need to power down to unplug the other SSD, preferably swap its cable to the Win7 drive you want to keep so it is first in order, boot into Win7 installation media or System Repair Disk to run Startup Repair - Run 3 Separate Times until Win7 starts and SysReserved holds the System Active flags.

You can then plug back in the other drive to delete it in Disk Mgmt. You may need to first Mark Partition as Inactive - Windows 7 Forums

Well I've got a screen shot but the paperclip does not reveal a dropdown menu for the upload!

johnwhite said:

Well I've got a screen shot but the paperclip does not reveal a dropdown menu for the upload!

Check for popup

If I click on the smiley next door it drops down but the paper clip does not. If I right click the paperclip I get a white background menu that is more system and not the web page, options there "Save image as, Copy image URL.... etc."

Pop up blocker now off so here is the disk management screenshot!

You are presently booted into C as signfied by the Boot flag on the partition. C is being booted by the small System Reserved partition to its left which needs both the System and Active flags to be able to boot itself. But the only System flag is on D which means it is booting both OS's now.

So to make C bootable on its own you must write the System boot files to System Reserved partition. Since it is already marked Active, power down to unplug all other HD's, swap the DISK0 cable to DISK1 so that it is the preferred DISK0 position if possible, then boot the Win7 installer to run Startup Repair - Run 3 Separate Times until Win7 starts and System Reserved holds the System Active flags.

You can then plug back in the other drives, wipe any old OS HD of all code using Diskpart Clean Command then repartition it in Disk Mgmt.

I notice you are running the hideous Win98 graphics instead of Win7's beautiful Aero Graphics. I would type Aero into Start Search box to run the Aero Troubleshooter to find out what is needed. At the minimum I would select an Aero, or if it is unavailable a Basic Win7 theme in Control Panel>Personalize to enjoy Win7's much nicer graphics than the Soviet file cabinet theme.